

🔧 Lock in Power with Precision-Engineered Performance!
The ARP 2084305 High Performance 12-Point Cylinder Head Stud Kit is a vehicle-specific upgrade designed for Honda Civic D16Y engines. Manufactured in the USA from premium 8740 alloy steel, each stud undergoes a rigorous heat treatment to 200,000 psi and precision centerless grinding for perfect alignment. This kit ensures superior clamping force, enhanced fatigue strength, and optimal sealing—making it the trusted choice for high-compression, turbocharged, or supercharged engines seeking reliable, race-proven durability.

| ASIN | B000CFS2DK |
| Best Sellers Rank | #112,205 in Automotive ( See Top 100 in Automotive ) #1 in Automotive Performance Engine Head Bolt Sets |
| Brand | ARP |
| Color | Grey |
| Customer Reviews | 4.8 4.8 out of 5 stars (138) |
| Date First Available | November 23, 2005 |
| Exterior Finish | Painted |
| Fastener Type | Stud Bolt |
| Global Trade Identification Number | 00672036030155 |
| Head Style | 12-point |
| Head Type | Honda D16Y |
| Is Discontinued By Manufacturer | No |
| Item Diameter | 0.44 Inches |
| Item Hardness | Grade 8740 |
| Item Weight | 2 pounds |
| Item model number | 2084305 |
| Manufacturer | ARP |
| Manufacturer Grade | premium |
| Manufacturer Part Number | 2084305 |
| Maximum Shear Strength | 90 ksi |
| Metal Type | Alloy Steel |
| Model | ARP 208-4305 |
| Number of Pieces | 12 |
| OEM Part Number | 208-4305 |
| Size | 0.625 inches UNC |
| Thread Class | 2A |
| Thread Size | 0.625 inches |
| UPC | 672036030155 |
N**L
Genuine parts at reasonable price
Have them installed but havent ran the engine yet. Genuine ARP quality
O**N
Worth it
I've been building engines for years and I've had no problems with ARP hardware, ever. From 4 cylinders to v8s. I will always choose ARP for any of my performance builds. The price is worth it, buy once cry once. The quality of arp surpasses any other brand you can find. Cheap hardware can break, these won't.
M**.
Better then OEM
These are the best way to go when doing a cylinder head job. Far exceeds even factory OEM bolts.
G**D
D16Y8
Installed on my turbo 96 civic with a D16Y8. Product came well packaged and all parts there. Some have said theirs was opened / installed before, Mine was sealed with plastic wrap and nothing was missing / opened. Install is super easy. 4mm allen for the top of the stud for install and a 12mm 12pt socket for torquing down the nuts.
W**T
Arp excellent brand great parts
Definitely they were real brand great parts definitely recommend stock head bolts are only good for I'd say one retort until they stretch the threads bought these never had a problem again good purchase
J**T
does its job
arp rules.arp forever.if everybodys parts were as good as arps,the world would be a better pklace
B**N
Worked great
No head lift. Holds up well
P**G
Will never go without
To the person that lubed and installed the studs then removed them and returned to Amazon.. You Suck! I live in the Midwest with no access to any local places to get performance products. I had these studs delivered on a Saturday only to open the box and find this. I inspected the studs and they looked like they were installed in the block but never had the head installed. I had no choice but to use these and Amazon gave me back some of the money I paid for them. Amazing product shame the buying experience was not better.
J**B
Worked well, follow the instructions and you’ll have no issues
R**2
Got in an Amazon deal. Perfect.
Trustpilot
3 weeks ago
3 weeks ago